Lubricating device



O. J. HERB LUBRICATING DEVIGE Sept. 25, i928.

2 Sheets-Sheet Filed April 14. 1924 ,IIT .IIT

O. J. HERB LUBRICATING DEVICE' Sept. 25, 192s.

Filed April 14.

1924 2 Sheets-Sheet 2 .rim WJ 5 0 Patented Sept. 25, 15928.

stares.

OTTO J'. HERB, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BASSICKMANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

LUBRICATING DEVICE.

Application filed April 14,

MyA invention relates to improvements in lubricating devices and isparticularly concerned with the provision or a novel type of lubricatingdevice forminga part of a socalled high pressure lubricating system.`This lubricating system comprises a plurality of fittings, which aresecured'to the bearings to be lubricated, and a compressor for supplyinglubricant under pressure to the fittings, the compressor being providedwith some means for making sealed connection:

` is to provide a lubricating device comprislng a grease cup constructedin such manner that lubricant can be forced therefrom into a bearingunder considerable pressure, and embodying a fitting which can beconnected with a suitably constructed compressor for the purpose ofreiilling the grease cup, and for the further purpose of supplyinglubricant to the bearing under higher pressure than it is practicable tocreate by the operation of the grease cu pAnother object of my inventionis. to provide a lubricating device of the character de scribed in whichthe lubricant is discharged from the grease cup into the bearing by therotation of one part of the lubricating device relatively to anotherpart thereof. j A still further object of my invention is to provide alubricating device of the character described with yielding means' forholding the two parts of the device against accidental rotation, so thatthere will be no danger of the -two parts rotating relatively to eachother except through some manual operatlon.

My invention further contemplates the provision of a lubricating deviceas described which is simple of construction, economical to manufactureandeasy to operate.

Other objects of my invention will appear as this descriptionprogresses, reference being had to the accompanying drawings, in which IY Figure 1 is a. view showing my improved lubricating device in sideelevation and also showing, in side elevation, a compressor 1924.seriaiNo. 706,337.

which may be used for illing my improved lubricating device;

Figure 2 is a central longitudinal section; Figure 3 is a section takenon line 3 3 of Figure 2;

Figure 4 isa view similar to Figure 2 but 60 showing a modified form ofmy invention;

Figure 5 is a section taken on line 5-5 of Figure 4; and

Figures 6 and 7 are views similar to Figures 4 and 5, respectively, butshowing an- 65 other embodiment of my invention.

Throughout the several views, similar reference characters will be usedfor referring to similar parts, and the several sections are takenlooking inthe direction of the small arrows.

Referring, for the present, to Figures 1 to 3, inclusive, my improvedlubricating device comprises la tubular member 10, one end of which isthreaded, as shown at 11, to provide means for securing it to a bearing12, and the other end of which is off-set, as shown at 13, to provide ashoulder for receiving the thrust of a piston P comprising the faceplate 14, the cup leather 15 and the follower plate 30 16, all of whichare centrally apertured for receiving theinner end of the tubular member10, and held in place by the latter being flanged' or swedged over, asshown at 1 7.

VThe tubular member 10 is internally threaded, 85

as shownA at 18,` for receiving the tube 19, which is externallythreaded, and which carries, adjacent its outer end, the inverted cup20, the walls of which enclose the periphery of the cup leather 15 andform, with the pis- 90 t0n P, a chamber 21 lfor receiving and holdinglubricant. l

The lubricant is supplied to the chamber 21 through 'the fitting 22,which is of well known construction, and through .which lubri- 95 cant.is forced by means. of the compressor' 23, having thel flexibledischarge conduit 24 and a coupling member 25, all of which are equallywell known. The lubricant passing through the fitting 22 will first lillthe cav- 100 ities in the tubular member l() and the tube 19 and thenpass through the openings or ports 26 in the wall of the tube 19 andinto the chamber 21.

When the cup is first being filled, the tube 19 will be almostcompletely unscrewed from the tubular member 10, so4 that the chamber`21 will have a maximum capacity. When this chamber has been filled any.further pressure, exerted upon the lubricant by the compressor 23, willcause the lubricant to be forced into the bearing 12 under the veryconsiderable pressure which can be generated in the compressor 23. Whensufficient lubricant has lthus been forced into the bearing, thecompressor is detached from the fitting. Thereafter, whenever it isdesired to supply additional quantities of lubricant to the bearing, allthat is necessary is for the operator to rotate vthe cup portion 2() ofthe device in the proper direction to cause it to move downwardly underthe piston P. This will cause the lubricant in the chamber 2,1 to beforced through the ports 26 and the ports of the tube 19 and'tubularmember 10 into the bearing.

For preventing the accidental rotation of the cup 20, due to vibration,or any other extraneous influences, I provide a yieldinglocking meansifor holding the cup 20 station- -ary with resp ct to the tubular member10.

This means c mprises the disk 27, the edge of which is co nected withthe lower portion of-the cup 2d. The central portion of the disk 27 isdepressed to form the vertical flange 28 and the horizontal flange 29. Apair of' oppositely disposed bow springs 30 have their ends 30 securedin oppositely disposed openings formed in the flange 28 and pass uponopposite sides of the tubular member 10, which is hexagonal in crosssection as shown in Figure 3. The bow springs 30 have recesses 31 formedadjacent their centers for receiving the corners of the tubular memberV'10, as shownin Figure 3. From the above description it Will.beapparent that when the cupA 20 is rotated, the bow springs 30 will berotated therewith and the recesses 31 will ratchet over the corners ofthe tubular member 10 and can be broughtA into co-acting relation withany pair of oppositely disposed corners, so that the cup 20 will beyieldingly held against accidental rotation relative to the member 10.

For the purpose of excluding dust from the Space between the disk 27 andthe piston P, I provide the disk 32 which has an opening thereincorresponding in shape to the exterior of thetubular member 10. Thisdisk 32 is confined between the flange 29 and the bow springs 30 so thatit will slide along the tubular member 10 whenever the cup 20 isVadjusted in either direction, but will prevent the `entrance of dust tothe chamber formed between the disk 27 and the piston P.

The modified form of inv invention disclosed in Figures 4 and 5 issimilar to that disclosed in Figures 1 to 3, inclusive, exceptthatinthis form the disk 27 has a central opening provided with ascalloped edge forming the notches or recesses 31 which receive'theprojections 33 formed in the bow springs 30a. In this embodiment of myinvention the bow springs 30a are confined between the disk 34 and thedisk 35, which are positioned upon opposite sides of the disk 27, andclamped thereto, by forming tongues 36 on the disk and turning them upand over the inner edge of the disk 34, as shown in Figures 4 and 5, soas not only to provide means for securing the two disks together onopposite sides of the disk 27, but also to provide a hexagonal openingfor receiving the tubular member 10. lVith the construction justdescribed, when the cup 20 is rotated relatively to the tubular member10, the projections 33 ratchet in and out of the recesses or vnotches 31and lock the cup in any adjusted position.

In that embodiment of my invention illustrated in Figures 6 and 7, Imake use of a spring locking disk 30" which is confined between thecentral portion of the disk 27, and a second disk 37, which is providedwith a central circular aperture 38 permitting the cup 20 to be rotatedabout the tubular member 10. Tongues 39 are struck from the disk 27 andbent downwardly and then upwardly against the outer face of the disk 37,so as to confine the spring disk 30P'v between the disks 27 and 37.

The disk 27 is provided with a plurality of openings 40 which areadapted to receive the circular projections 41 pressed upwardly from thespring disk 30". The last mentioned disk has an opening corresponding inshape to the cross section of the tubular member 10, so that, while itcan slide along the tubular member 10, it can not rotate thereon. Inusing the lubricating device ust described the operator turns the cupuntil he `feels or hears the projections 41 snap into the openings 40,whereupon he knows that the cup 20 is locked against accidental rotationrela-y tive to the tubular member 10.

While I have described thedetail's of 'con-1v struction of the preferredembodiments of my invention, it is to be clearly understood that myinvent-ion is not limited to these details of construction, but iscapable of other adaptations and modifications within the scope of theVappended claims.

Having thus described my invention, what I cla-im is:

1. A. lubricating device comprising a fixed tubular member, a fixedpiston at the upper end thereof, an inverted cup fitting over saidpiston, an annular diaphragm mounted on the lower edge of said cup andforming a seal with said member, said diaphragm and lmember havingresilientv means mounted on one and engaging the other to lock them4against accidental displacement by vibration,

and means extending along the axis of said cup inside said member forforcing the cup down over the member.

2. A lubricating device comprising a tubular member having one endshaped to be fastened in place in a bearing, a fixed piston at the otherend thereof, a sleeve threaded inside Said member and having openingsabove said piston, an inverted cup rigid with the outer end of saidsleeve and fittlng over said piston, and check valved means forsupplying lubricant tosaid sleeve, saidnleans being threaded at theextremity of said sleeve.

In witness whereof, I hereunto subscribe my name this 11th day of April,1924.

' OTTO J. HERB.

